Tight Vote on Blueprint Shows Which GOP Lawmakers Feel That Backing It Is Political Risk

WASHINGTON—Rounding up votes for a Republican budget blueprint the House approved Thursday, House Majority Whip Kevin McCarthy told GOP lawmakers that he needed the support of all Republicans—or almost all of them.

"Not everyone can be running for Senate in Georgia," he joked in a closed-door meeting this week, according to lawmakers and aides.

In the end, Mr. McCarthy lost the votes of all three Georgia Republicans...